/*
 * Copyright (c) 2009-2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ALKES_DECODER_FACTORY_H_INCLUDED_
#define ALKES_DECODER_FACTORY_H_INCLUDED_

#include "alkes/internal.h"
#include "alkes/media/PixelFormat.h"
#include "alkes/core/TRefCount.h"
#include "alkes/core/ClassID.h"

namespace alkes {

class ImageDecoder;
class ImageBufferFactory;
class ImageBuffer;

/// \addtogroup media
//@{

/** Decoder factory interface.
 */
class AL_EXPORT DecoderFactory
    : public TRefCount<DecoderFactory>
{
    AL_DECLARE_ROOT_CLASS(DecoderFactory);

public:

    /** Create decoder from file.
     *
     * @param [in] filepath File path of image.
     * @param [in] format Format of image. See also PixelFormat.h.
     * @return ImageDecoder interface.
     */
    virtual ImageDecoder* createDecoder(const char* filepath, PixelFormat format);

    /** Create decoder in memory.
     *
     * @param [in] address Address of image.
     * @param [in] size Size of memory.
     * @param [in] format Format of image.
     * @return ImageDecoder interface.
     */
    virtual ImageDecoder* createDecoder(const void* address, uint32_t size, PixelFormat format);

    /** Destroy decoder.
     *
     * @param [in] decoder
     */
    virtual void destroyDecoder(ImageDecoder* decoder) = 0;

    /** Utility function to guess format.
     *
     * @param [in] filepath
     * @return
     */
    static PixelFormat guessFormat(const char* filepath);

    /** Get image buffer factory.
     *
     * @return 
     */
    ImageBufferFactory* getImageBufferFactory() const;

protected:
    friend class TRefCount<DecoderFactory>;

    /** Constructor.
     */
    DecoderFactory(ImageBufferFactory* factory);

    /** Destructor.
     */
    virtual ~DecoderFactory();

    /** For TRefCount.
    */
    virtual void destroy() = 0;

private:
    intrusive_ptr<ImageBufferFactory> factory_;
};

//@}

}

#endif
